28 Answers

9 votes

Ditch Mean Look. Overall, it's much more practical to have an attack instead. As Crobat's base Attack is higher than it's base special attack by 20, you might want to concider X-Scissor (Bug, power 80, ac. 100). If the type doesn't appeal to you, you probably would have to resort to a special attack move like dark pulse or giga drain

Here's the advantages of your move types (plus suggested types)

Fire grass, ice, bug, and steel.
Flying grass, fighing, and bug.
Poison grass.
Bug grass, dark, and psycic.
Dark Psychic, Ghost
Grass Water, Ground, Rock
As you noticed, you have a ridiculous super effective coverage against grass, and not that much else.

For your moves, if you don't take a fancy to how bug coordinates with your other moves, you probably should go for dark pulse as it can combat psycic, which is super effective against you. If you're into regaining health, giga drain would work even though it's only power 60 and is not very effective against a lot of types as it helps you combat rock, which also is super effective against you.

Flying doesn't have the best type coverage. Shadow Ball can also deal wth Psychic types. Remeber, there shudn't be any problem facing Grass, Bug, or Fighting types with Crobat. Psychic type, however, are a big problem.

Sludge Bomb is STAB, and has a nice base power and accuracy.
Starting off with Air Slash for STAB right off the bat. Air Slash also has better coverage than Sludge Bomb, but Giga Drain and Heat Wave is usually enough.
Giga Drain provides a little healing as well as some coverage.
Heat Wave can hit steel type pokemon for some reasonable damage. Ice weakness.
Nasty Plot doubles Sp.atk, Useful for Crobat mediocre Sp.atk stat.
Dark Pulse/Shadow Ball might also be worth taking a look at.

Status/Support-Bat

Confuse-ray is self explanatory, it confuses the opponent. Hypnosis makes them go to sleep. Super-fang cuts there HP down to half in one hit, which is a great help to the rest of the team as it makes it easier to finish off. Tailwind is great for team support.

This croabat's moveset doesnt cover weaknesses, instead it's meant to be a wall breaking support pokemon. This is mostly for irritating walls that want to set up right infront of you. With it's defense EVs and quite decent defences, it can turn into a very irritating pokemon.

BATMAN!

This is the Crobat set I use in OU quite frequently, he is extremely effective, I once even turned a 2-6 loss into a 6-5 win for me just with this guy!. Acrobatics is EXTREMELY powerful STAB it makes Crobat the ultimate counter to Fighting and Grass combined with that 4x resistance, this guy even can take out Conkeldurr! U-turn is for escaping foes I can not defeat with Crobat. Super-fang is great for breaking through bulky Pokemon. Steel-wing can be used for coverage and if you are fortunate Defense boost, while Confuse-ray is for status and is very useful in my experience, Taunt is if you want to destroy stallers and leads.

Good uses for Crobat:

Taunt lead: Makes them not able to set up with Taunt, then uses Super-fang on the bulky ones then U-turns out of there.

Sweeper: Takes out Volcarona and Fighting types with Acrobatics and breaks through Bulky Pokemon with Super-fang then switches out with U-turn.

Annoying wall destroyer: Uses Confuse-ray to make them well confused XD then uses Super-fang to take away half there health, then use U-turn.

Fly is STAB and gets you where you wanna go as well as hitting hard, Shadow Ball helps with the ghost member of the E-4 and is physical in Gen.III, while Sludge Bomb is STAB and also Physical due to it being in a past Gen. Confuse Ray can be used effectively but Mean Look helps with catching Latias/Latios.

Toxic - Guaranteed poisoning, and since poison increases damage each turn, this will take out an opponent very quickly.
OR:
Poison Fang - Power is 50%, and accuracy is 100%. Also has the potential to poison opponents.

Fly - Power is 90%, accuracy is 95%. A 2 turn move, and avoids most attacks except for Seismic Toss and a few others. This does a fair amount of damage in most battles.
OR:
Steel Wing - Power is 70%, and accuracy is 90%. Technically, Fly wins if you are looking for good power and accuracy, but Steel Wing has an steel type advantage. It's always good to have different types of moves.

Roost - For healing. Combined with the other moves, this makes Crobat VERY hard to deal with.
Confuse Ray - Confusion with poison effects can be a wonderful combo. Using Fly along with it means that the opponent can't hit Crobat much, and when they do, it can heal with Roost.

Cross Poison can poison an enemy and has a high critical hit ratio.
Fly is the secondary power move in dire situations.
Confuse Ray has 100 Accuracy while Hypnosis only has 55 Accuracy.
Acrobatics is boasted by him having no item.

And to help my argument I beat an aggron with this moveset. (But that was probably luck)